Move to double to avoid rounding error

This rounding errors seems to happen when adding floats very close to 1
to a relatively large number.

325.0 + 0.99999034 = 326.0

This is a problem as this sample should be counted at the 325 pixel.
However this will be a lesser problem when filtering is implemented.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/main.rs b/src/main.rs
index c6bc14e..1604ae3 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -32,7 +32,7 @@ fn main() {
     let mut film = Film::new(res);
     let tile = film.get_tile(&film.frame);
 
-    let mut task = RenderTask::new(Box::new(tile), 10);
+    let mut task = RenderTask::new(Box::new(tile), 100);
     task.render(&ctx, &mut sampler);
 
     film.commit_tile(&task.tile);